Priming device for internal-combustion engines



April 22 1924.

R. F. NICHOLAS PRIMING DEVICE FOR INTERNAL'COMBUSTION ENGINES Filed May 29, 1920 .li atented Apr. 22, 1924.

UNITED STATES PATEN OFFICE.

RAY FRANCIS NICHOLAS, OF ORLANDO, FLORIDA, ASSIGNOR OF ONE-HALF TO LABAN J. PATCH, OF GREENSBORO BEND, VERMONT.

IPRIMING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Application filed May 29,

To all err/10m it may concern:

Be it known that I, RAY F. NICHOLAS, a citizen of the United States, residing at Orlando, in the county of Orange and State of Florida, have invented certain new and useful Improvements in Priming Devices for Internal-Combustion Engines; and I do hereby declare the following to he a full, clear, and exact description of the invention such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

The object of this invention is to provide an improved combined carbureter and primer for internal combustion engines, which is simple in construction and thoroughly efficient in operation. 7

The invention is clearly illustrated in the accompanying drawing, in which Figure 1 is a view in elevation, partly in section, of my combined carbureter and pri- 'mer, showing the air-valve open;

Figure 2 is a similar view showing the air valve closed, and

Figure 3 is a fragmentary view, in partial section, of the parts shown in Figures 1 and 2.

Referring now in detail to the drawing:

1 designates the air-intake of the engine, provided with an enlargement 2, the inner face of which constitutes a valve seat for an oscillatory air valve 3, provided with a diametric ort 4E therethrough. Said valve is preferably cylindrical, as shown in Figure 3, and projects through diametrically disposed openings 5, 5 in the wall of the pipe 1. One of the exteriorly projecting ends 6 of said valve is provided with an operating handle 7, whereby the valve may be turned from the position shown in Figures 1 and 3, where the port a registers with the bore of the pipe 1, to the position shown in Figure 2, where said port is blanked by the wall of the enlargement 2.

Projecting into said pipe 1, between the valve 3 and the engine, is a gasoline pipe 8, leading from a suitable source of fuel supply, as a gasoline tank, and terminating interiorly of said pipe in an elbow 9 having a nozzle 10, through which gasoline is 1920. Serial N0.'385,317.

sucked by the air passing through the pipe 1,

e position shown in between awasher 12, on the stem 12, and

the exterior surface of the pipe 1, to hold the needle-valve against accidental turning, due to jar and vibration of, the engine in use. Normally, the needle-valve is in open position, but may be manually closed by grasping the handle 13 and giving the stem a partial rotation.

Normally, the position of the parts is as shown in Figures 1 and 8, in which the air valve 3 is open, whereby air passing through the pipe in the operation of the engine, sucks the gasoline through the nozzle 10 of the pipe 8, mixing therewith and passing through the engine cylinder. When it is desired to prime the engine, the air valve 3 is turned to the position shown in Figure 2, thus shutting off passage of air through said valve, whereupon the engine is turned over in the usual manner to draw pure gasoline into the engine cylinder through the nozzle 10.

The device of my invention is intended for I gasoline engines of the field type, and is not applicable to automobile engines.

What I claim to be new is: e A primer comprising a conduit proportioned to be interposed between a carburetor V and an intake manifold, a valve in said conduit and a tube introduced into the conduit and provided with an upturned end termi nating in a nozzle higher than the inlet level, said upturned end and nozzle being sub stantially coaxial with the conduit and producing an annular passage thereabout, a valve stem extending radially into the conduit, a valve carried by the stem introduced into the upturned nozzle end and a manual lever external of the conduit.

In testimony whereof I hereunto affix my signature.

RAY FRANCIS NICHOLAS. 

